Narrow bandwidth 850-nm fiber Bragg gratings in few-mode polymer optical fibers

Alessio Stefani, Wu Yuan, Christos Markos, Ole Bang

Research output: Contribution to journalArticlepeer-review

78 Scopus citations


We report on the inscription and characterization of narrow bandwidth fiber Bragg gratings (FBGs) with 850-nm resonance wavelength in polymer optical fibers (POFs). We use two fibers: an in-house fabricated microstructured POF (mPOF) with relative hole size of 0.5 and a commercial step-index POF, which supports six modes at 850 nm. The gratings have been written with the phase-mask technique and a 325-nm HeCd laser. The mPOF grating has a full-width at half-maximum (FWHM) bandwidth of 0.29 nm and the step-index POF has a bandwidth of 0.17 nm. For both fibers, the static tensile strain sensitivity is measured to be 0.71 pm/με at 850 nm and 1.3 pm/με at 1550 nm.

Original languageEnglish (US)
Article number5728843
Pages (from-to)660-662
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number10
StatePublished - 2011


  • Fiber Bragg grating (FBG)
  • fiber-optic sensors
  • polymer optical fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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